... stainless composite piping material, which has the following advantages:(smooth on surface, non-pilling, non-knotting, non-slip-stick, unity in ... : φ15.8*1.2, φ15.8*1.5, φ19.0*1.2, φ19.0*1.5, φ22.2*1.2, φ22.2 ... *1.5, φ22.2*1.8, φ22.2*2 ... *2.1, φ27.5*1.2, φ27.5*1.5, φ27.5*1.8, φ27.5*2.1....and so on)3) Different sizes and quantities can be supplied ...